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(No Model.) I 2 Sheets-'-Sheet 1.

'F. 0. MATTHIESSEN 8a E. E.-QUI1VIBY. APPARATUS FOR DEGOLORIZING SAGGHARINE ANDOTHBR LIQUIDS BY FILTRATION THROUGH BONE BLAo'K.

No. 329,330. Patented Oct. 27, 1885.

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(N0 ModeL) 2 Sheets-Sheet 2.

v F. 0. MATTHIESSEN & E. E. QUIMBY. APPARATUS FOR DEGOLORIZING SAGGHARINE- AND OTHER LIQUIDS BY FILTRATION THROUGH BONE BLACK.

No. 829,330. Patented Oct. 27, 1885.

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TINTTTTTT STaTns PATENT rrrca FRANZ O. 3 ATTIIIESSEN, OF IRVIITGTOX, NE'W YORK, AND EDXVARDE.

QUIMBY, OF ORANGE, NEW Jl lRb EY, ASSTGNORS TO THE F. O. MAT- THIESSEN 8a TVIECHERS SUGAR REFIXIITG COMPANY, OF JERSEY CITY,

NEV JERSEY.

APPARATUS FOR DECOLORIZTNG SACCHARINE Alt'D OTHER LIQUIDS BY FILTRATION THROUGH BONE- BLACK.

T0 aZZ whom it may concern.-

Be it known that we, FRANZ O. BLXTTITIIB- SEN, of Irvington, New York, and EDXVARD E. QUDIBY, of Orange, New Jersey, have invented certain Improvements in Apparatus for Decolorizing Saccharine and other Liquors by Filtration through Bone-Black, of which the following is a specification.

These improvements are especially useful in the class of filters in which sugar-liquor is decolorized by causing it to filter upward through a mass of bone-black contained in the lower portion of a vertical cylinder which is filled with bone-black above the level at which the sugar-liquor is withdrawn, so that the portion of the boneblack by which the filtering operation is performed is compressed by the weight of the column of bone-black above it.

The object of the invention is to effect the uniform removal of the sugar-liquor, as well from the central portion of the column of boneblack as from the outer portions thereof; and to this end the invention consists in the ar rangement, at the level at which the sugarliquoris to be discharged, ot'transverse troughs protected above by inverted-V shaped shields, and, if need be, by sieves interposed between the wings of the shields, whereby the boneblack is prevented from making its way into the drainingtroughs.

Another feature of the improvement consists in connecting the drainiugtroughs with the apertures in the side walls of the filteringchamber, through which the sugar-liquor is discharged by means of horizontal tubes of suitable length, in order that such portion of the sugar-liquor as makes its way upward along the interior surface of the wall of the filter may not have immediate access to the draining-troughs, but be compelled to move laterally a short distance in order to reach a point at which it can make its way into the drainingtronghs, the reason for this being that the sugar-liquor rises more freely along the wall of the filter than it does through the central portion of the mass of bone-black. There is less resistance to the upward movement of the sugar-liquor along the wall of the filtering-cylimler than there is in the center of the mass of bone-back, and this feature of the improvement is intended to add such a degree of obstruction to the discharge of the sugar-liquor from the surface of the column of bone-black as will make the total resistance to the movement of the sugar-liquor around the outside of the mass of bone-black equal to the resistance to the upward movement of the sugar-liquor through the center of the mass of bone-black.

()ur invention also includes devices for adjusting the height of the column of sugarliquor which flows into the apparatus, and thereby regulating the degree of hydrostatic pressure u nder which the sugar-liquor is forced upward through the filtering-chamber.

Our invention may be applied to bone-black filters of a variety of types, as well to those in which the bone-black through which the sugar-liquor is filtered is compressed by the weight of a column of superinoumbent boneblack as to those in which the compression is effected by a screw-compressor.

The accompanying drawings of a filtering apparatus containing our improvements are as follows:

Figure 1 is a central vertical section, showing thefiltering-chambersurmountingarcceivingchamber for receiving the exhausted boneblacl; discharged from the bottom of the filtering-chamber and conducting it to the bottom of a well, from which it is elevated by means of a chain and bucket or other elevator. Fig. 2 is a horizontal section through the line 00 a; on Fig. 1. Fig. 3 is a horizontal section through the line 7 you Fig. 1. Fig. 4 is a central vertical section similar to Fig. 1, with the exceptions that the draintroughs are not represented in transverse section, as in Fig. 1, but one of the drain-troughs is shown in central 1ongitudinal section, and the compressor, which is shown in Fig. 1, is omitted. Fig. 5 is an elevation of the upper part of the filteringchamber and well, showing the cistern which supplies sugar-liquor to the apparatus in central vertical section. Fig. 6 is an isometrical perspective of the end portion of one of the troughs h, and portions of itsshield, 850. Fig. 7 is a transverse vertical section of one of the troughs h and its shield. i

The apparatus represented in the drawings consists, substantially, of a vertical cylinder, A, containing a column of bone-black, B, supported at the bottom upon a suitable valve or perforated diaphragm, O, for gradually discharging the exhausted bone-black from the bottom b of the column of bone-black. The exhausted bone-black thus discharged falls into a receiving-chamber, D, which has an inclined bottom, d, by means of which the exhausted bone-black is conducted by its own.

gravity into the bottom of the well E, from which it is elevated by means of the bucket and-chain elevator F, and is discharged at the mouth of the well upon the inclined chute f.

The saccharine liquor to be decolorized is introduced into the well by means of the pipe G from asuitably-elevated cistern, G. The sugar-liquor thus introduced falls into the bottom of the well, and rises by hydrostatic pressure through the mass of bone-black B contained in the filtering-chamber, and is discharged therefrom, by means of the system of transverse draining-troughs I-I through the perforations Hin the side wall of the cylinder A, into the external annular trough, H surrounding the cylinder A, from which it is conducted off by the discharge-pipe H Each of the troughs h of the system of troughs is either covered ashort distance from both of its ends or is connected with a short tube, h, the outer end of which is inserted in one of the perforations H in the wall of the cylinder A. The superincumbent mass b of bone-black is prevented from falling into the drain-troughs h by the inverted-V-shaped shields I. As will be seen, each one of the troughs h is provided W th one of the shields I, the wingst' of which extend a suitable distance below the edge of the top of the trough.

If required, wire-gauze sieves 7c may be fastened in the spaces between the troughs and the inner sides of the Wings 1' i of the shields, as shown in Fig. 5, or a single sieve, K, may be attached at its edges to the wings it of the shields, and may extend across under the trough H, as shown in Fig. 6. The object of the sieves is to prevent fine particlesof boneblack from being floated up 'into the troughs. By this mode of organization the resistance to the upward movement of the sugar-liquor through the exterior, as well as the central portion of the mass of bone-black, is rendered as nearly as possible uniform.

The compression of the mass of bone-black through which the sugar-liquor is filtered may be effected, as shown in Fig. 1, merely by the weight of the superincumbent mass 1) of the column of bone-black; or, ifdesired, compression may be produced by means of the compressor L, the rim L of which is supported in the circumferential enlargement A of the cylinder A, and has formed upon its face suitable teeth, U, for engagement by the horizonial worm M, by means of which the compressor is rotated. the rim L, and of radially'arranged suitablywinding blades Z Z, 850., like the blades of a propeller. The inner ends of the blades Zare attached to a central hub, L, and their outer ends to the interiorsurface of the rim L. The sugar-liquor makes its way upward through the spaces between the blades Z Z, 820., and thence finds its wayinto the draining-troughs h h, 850., which are arranged just above the compressor, as shown in Fig. 3.

As an additional precaution, to secure the uniform and suitably-slow movement of the sugar-liquor through the bone-black, we introduce it into the apparatus from a cistern, G, which is supplied from the main reservoir through a supply-pipe, G, provided with a ball-cock, g, and adjusting devices, by means of which the surface of the suganliquor in the cistern is maintained at a level just sufficiently far above the level of the outlet or outlets through which the sugar-liquor escapes from the filtering-chamber to compensate for the frictional resistance which the sugar-liquor meets with in passing down the well and upward through the mass of bone-black in the filtering 011811111361 to its point of discharge therefrom.

The desired adjustment may easily be obtained by making the fioat g vertically adj ustable relatively to the free end of the lever or arm 9, by means of which the valve 9 isoper'ated. Thus the float may be affixed to the lower end of a stem, 9 which is loosely inserted through a sleeve, 9, provided with a set-screw, 9 for clamping the stem 9 in the position in which it may be adjusted. The sleeve 9 is provided with a horizontal pivotal connection, 9*, with the free end of the valve operating arm 9.

The valve 9 is capable of supplying the cistern with a larger quantity of liquor than is required, and therefore by varying the height of the float g -relatively to the end of the arm 9, with which it is connected, the height of the sugar-liquor in the cistern may be correspondingly varied. It will of course be understood that the draining-troughs h and their shields need not necessarily be parallel with each other, nor necessarily independent of each other, so long as they are so arranged as to drain the sugar-liquor from the column of bone black ata prescribed level. i

We claim as our invention- 1. In apparatus for decolorizing sugar-liquor by the process of upward filtration through a column of bone-black contained in a suitable vessel or cylinder, asystem of draining-troughs extending transversely into or across the column of bone-b1ack at the height at which it is desired to drain the sugar-liquor therefrom, and a system of shields over the draining-troughs for preventing the bone-black from falling into the said troughs, and a con- The'compressor Lis composed of ICC duit or conduits for receiving and conducting off the sugar-liquor discharged through the draining-troughs.

2. The draining-troughs h h, &c., extending transversely into or across the column of boneblack at the desired height, and the shields l I, &c., each having the flaring sides or wingsii, as and for the purposes set forth.

3. The draining-troughs h h, 810., and the shields I I, &c., each provided with a sieve for preventing particles of boneback from being floated upward into the said troughs by the rising of the sugar-liquor through the column of bonc-blaclz,i1ito or across which the draining-troughs extend.

4. A system of draining-troughs provided with suitable shields and arranged transversely across a column of bone-blacl contained in a filtering-cylinder and connected by comparatively short tubes with perforations in the Wall of the filtering-cylinder lead ing to a conduit or conduits for receiving and conducting off the sugar-liquor drained from the column of bone-black, for the purpose of increasing the facility of drainage from the interior portion of the column of bone-black, and diminishing the facility of drainage from 5. In combination with filtering apparatus for decolorizing sugar-liquor by the process of upward filtration through bone-black, substantially such as described, a cistern for supplying sugar-liquor to the apparatus, suitably elevated, and provided with means for adjust ing the height of the sugar-liquor in the said cistern relatively to the height of the outlets through which the sugar-liquor is discharged from the filtering-chamber, substantially as described.

6. The filtering-cylinder A, provided at a prescribed elevation with discharge-outlets H, for the discharge of the sugar-liquor after filtration, in combination with a cistern, G, and a suitable connection therefrom to the lower part of the cylinder A, the supply-pipe G the valve 9, provided with the operatmgarm 9, and the vertically adj ustable float 9, connected with the free end of the arm 9, and means for vertically adjusting the float g relatively to the said arm, as and for the purpose set forth.

F. O. MATTHIESSEN. ED\V. E. QUIMBY.

Witnesses:

the exterior portion thereof, and thereby renl dering the upward current of sugarliqu0r through all parts of the column of boneblack as nearly uniform as may be.

11. O. Howns, M. L. ADAMS. 

